Definition: You are given a question on machine learning. You are also given 4 answer options (associated with "A", "B", "C", "D"), out of which only one is correct. You need to answer the question by selecting the correct option. You should only answer with the choice letter, not the whole answer.
Input: Predicting the amount of rainfall in a region based on various cues is a ______ problem.
(A)Supervised learning (B)Unsupervised learning (C)Clustering (D)None of the above

A